问题
单项选择题
在井筒内用罐笼运送爆破材料时,运送硝化甘油类炸药或电雷管的罐笼升降速度不得超过()。
A.1m/s
B.2m/s
C.3m/s
D.4m/s
答案
参考答案:B
在井筒内用罐笼运送爆破材料时,运送硝化甘油类炸药或电雷管的罐笼升降速度不得超过()。
A.1m/s
B.2m/s
C.3m/s
D.4m/s
参考答案:B
VI.用所给词组的正确英语形式填空(其中有两个是多余的): (共10小题,每题1分,满分10分)
---Yes, we got there just __________________. 81.---Will you go fishing this afternoon? ---Well, it all __________________ the weather. 82.A gang of boys were often seen __________________ fireworks in the street. 83.We should find some ways to _______________ the harmful gas _______________ spreading. 84.Her genuine love for you may __________________ what she has sacrificed (牺牲)to make you succeeD. 85.The spy caught __________________ the military base was sentenced to 20 years in prison and was limited with no relative visiting. 86.Your hair and eyes __________________ me __________________ your mother. 87.We can believe in him for he is always __________________. 88.Don’t try to cheat in your examination---you’ll never __________________ it. 89.The party is not very formal, so there’s no need to __________________---come as you are. |